Improvement in feed-water heaters for steam-boilers



H. N.- WATERS; Feed-Water Heater for Steam-Boilers.

10,160,979 Paten'tedMarch16J875 WITNESSES:

THE GRAPHIC C0.PHOT0 r-LITH.39&4! PARK PLAOLN-Y.

UNITED STATES PATENT QFFIC HOBATIO N. WATERS, OF WEST MERIDEN,CONNECTICUT.

IMPROVEMENTJN FEED-WATER HEATERS FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 160,979, dated March16, 1875 application filed January 25, 1875.

To all whom it may concern:

Be it known that I, HORATIO N. WATERS, of West Meriden, in the county ofNew Haven and State of Connecticut, have invented a new and usefulImprovement in Feed-Water Heaters for Steam-Boilers; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawing, forming apart of this specification, in which- The drawing shows a sectionalelevation of my improved heater.

The chief objection to boiler feed-water heaters of the class in whichexhaust-steam is .conveyed through a pipe or pipes arranged within thewater-reservoir formed by the shell of the heater, is the leakage causedby contraction and expansion under variation of tempera ture, and thedamage, annoyance, and ex pense consequent thereon. The object of myinvention is to provide a heater which shall be free from this defect.To this end the construction and arrangement of parts are as hereinafterdescribed.

A indicates the shell of the water-reservoir, having an inlet, J, forcold water, near the bottom, and an exit, I, near the top, for the samewater when heated. The openings J I connect, respectively, with asuitable watersupply reservoir and the steam-boiler. D is a corrugatedexhaust steam-pipe connecting with the boiler, and E' is a similarlycorrugated branch'thereof, through which the steam escapes, the twobeing connected at the bottom, andboth cast (of iron or other suitablemetal) in one piece with the cover B of the shell A. The cover issecured by any preferred means. The corrugations serve to increase jtherespective steam and water contact surfaces of the pipes withoutcorresponding increase in their diameter, while the absence of scams orjoints between the pipes and the cover prevents leakage due to unequal.expansion and contraction, or other cause.

To draw off the condensed water from pipes D and E I provide the formerwith a downward vertical extension, G, which passes through thecylindrical plug or packing piece H in the bottom of the reservoir A,and is, in practice, provided with a suitable stop-cock. The plug H isaccurately fitted to pipe Gr, so that the latter slides through it asthe pipes D and E contract and expand together under the influence ofvarying degrees of heat.

By the above construction Iprovide a heater in which the tendency orliability to leakage, by reason of the tubes through which the steam (orwater) is conducted being connected rigidly to the inner wall of theshell or case of the heater, is entirely obviated.

Lime or other impurities precipitated by the heat of the steam may bedrawn oft by pipe K.

What I claim is In a feed-water heater, the pipes D and E, attached toand suspended from the cover B, and provided with the downward extensionG, the plug H, and reservoir A, all combined, constructed, and arrangedas shown and described, to operate as specified.

HORATIO N. WATERS.

Witnesses BENJ'. PAGE, Jr., GEORGE N. MORSE.

